Bug 1950764: Work Around Crash on Intel Raptor Lake CPU | Hacker News

Mozilla has added a Firefox crash workaround for Intel Raptor Lake CPUs.

The fix changes generated code to avoid a `movb` store from a high-byte register alias.

That pattern can trigger a silent two-byte store corruption tied to an Intel erratum.

The issue highlights a real hardware stability bug and the need for compiler-level mitigations until systems are updated.